len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2026-01-22 01:30:35 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

iMX233 RTC init: make clock source (32kHz/24MHz) explicit for targets

Browse source 
Change-Id: Ib4fa56ad8ee28f3799b6c6c3c058d156353dd15c
This commit is contained in:
Sebastian Leonhardt 2025-11-29 12:13:52 +01:00 • committed by Solomon Peachy
parent 2f2b90535a
commit 873163c671
1 changed files with 15 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

23
firmware/target/arm/imx233/rtc-imx233.h
View file

@ -86,23 +86,30 @@ static inline void imx233_rtc_init(void)
BF_CLR(RTC_CTRL, SFTRST);
udelay(5); /* only need 3 GPMI clocks (1us) */
BF_CLR(RTC_CTRL, CLKGATE);
/* TODO: classify other imx233/STMP37xx/STMP36xx targets
* (e.g. CREATIVE_ZENXFI, CREATIVE_ZENV, SONY_NWZE360, SONY_NWZE370) */
#if defined(SANSA_FUZEPLUS)
#ifdef BM_RTC_PERSISTENT0_DISABLE_XTALOK
/* RTC runs on 24MHz crystal */
# if IMX233_SUBTARGET >= 3700
while (BF_RD(RTC_STAT, NEW_REGS)!=0) {};
BF_SET(RTC_PERSISTENT0, XTAL24MHZ_PWRUP, DISABLE_XTALOK);
#endif
# endif
while (BF_RD(RTC_STAT, NEW_REGS)!=0) {};
BF_CLR(RTC_PERSISTENT0, CLOCKSOURCE);
#else
/* confirmed for CREATIVE_ZEN and CREATIVE_ZENXFI2 */
/* FIXME: test SONY_NWZE360 and SONY_NWZE370 targets */
#ifdef BM_RTC_PERSISTENT0_DISABLE_XTALOK
#elif defined(CREATIVE_ZEN) || defined(CREATIVE_ZENXFI2)
/* RTC runs on 32.768 kHz crystal */
# if IMX233_SUBTARGET >= 3700
while (BF_RD(RTC_STAT, NEW_REGS)!=0) {};
BF_SET(RTC_PERSISTENT0, XTAL32KHZ_PWRUP, CLOCKSOURCE);
while (BF_RD(RTC_STAT, NEW_REGS)!=0) {};
BF_CLR(RTC_PERSISTENT0, XTAL24MHZ_PWRUP, DISABLE_XTALOK);
#endif
#endif
# else
while (BF_RD(RTC_STAT, NEW_REGS)!=0) {};
BF_CLR(RTC_PERSISTENT0, XTAL32_PDOWN);
while (BF_RD(RTC_STAT, NEW_REGS)!=0) {};
BF_SET(RTC_PERSISTENT0, XTAL24_PDOWN, CLOCKSOURCE);
# endif
#endif /* defined(target name) */
imx233_rtc_enable_watchdog(false);
}